BLEEP BLOOP: I just saw an aircraft with callsign #UAL710 (ICAO code #A5F938) flying at 319 kt at altitude 8975 feet MSL at coordinates 34.1694,-118.5352.

Another Top Gun burnout?

https://globe.adsbexchange.com/?icao=a5f938
https://www.openstreetmap.org/?mlat=34.1694&mlon=-118.5352#map=15/34.1694/-118.5352